Deluxe coffee is to be mixed with regular coffee to make at least 50 pounds of a blended coffee. the mixture must contain at least 10 pounds of deluxe coffee. deluxe coffee costs $6 per pound and regular coffee $5 per pound. how many pounds of each kind of coffee should be used to minimize costs?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.